Furnace-wall structure.



D. S. JACOBUS.

FURNACE WALL STRUCTURE.

APPLICATION FILED OCT. 2| l9l5.

l 2?5,037. Patented Aun-g.- 6,191.8.

f INVENTOR.

/7/54 A TTORNE YS.

l imacat.

" FFIQE@ DAVID S. JACOBUS, OF JERSEY CITY, NEW JERSEY, ASSIGNOR T0 THE BABCOCK & WILCOX COMPANY, OF BAYONNE, NEW JERSEY, A CORPORATION 0F NEW JERSEY.

FURNACE-WALL STRUCTURE.

To 'all whom it may concern:

Be it known that I, DAvID S. JAcoBUs, a citizen of the United States, residing at Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Furnace-Wall Structures, of which the following is a specification.

My invention relates to brickwork furnace walls and is designed to prevent bulging or moving inward under heat. The invention will be understood by reference to the accompanying drawings in which Figure 1 is avertical section through a portion of a boiler furnace, showing several ways of carrying out my invention; Fig. 2 an enlarged vertical section of a portion of the wall showing` one embodiment of the invention; and Fig. 3 a perspective view of the means shown in Fig. 2. Similar reference numerals indicate similar parts in the several figures. l

The primary object of my invention is to provide a means for holding a furnace wall so as to revent it bulging or springing inward. (generally stated the invention consists in laying in tie pieces, in the form of metallic Sheets or strlps, at suitable inter` vals, such sheets being so constructed as to give a good hold on the surfaces of the bricks composing the wall, and in securing said tie pieces at their outer ends to cross members or buckstays.

In the drawings the numerals 1 and 2 designate the side walls of a boiler furnace, 3 a drum of the boiler, and et water tub connected to the drums. The inner lining of the walls is made up of refractory brickwork 5 laid in regular courses, and the outer lining is made up of brickwork 6 laid in regular courses, and with relation to the inner lining, as indicated in Fig. 3. The particular manner of laying the courses is, however, not material to my invention. The drawings indicate several methods of holdf, ing the outer ends of the tie pieces. Ac-

cording to one method the tie pieces 7' have their outer ends 8 bent over and passed through openings 9 formed in the horizontally projecting leg of -an angle-iron 10. The latterA is secure to the inner face of a horizontal buckstay 11 placed outside of the wall.

According to, another methodfshown at the left-hand. side ef Fig. 1, one end of the Specification of Letters Patent.

Patented Aug. 6, 1918.

Application filed october v2, 1915. serial No. 53,668.

ed in a recess in the wall as indicated at the right-hand side of Fi'g. 1.

If desired, the wall may be allowed to slip at the back of the horizontal buckstay or supporting member when it changes its dimensions throu h expansion. In such cases the wall is ormed with a pocket 16 at the outer end of each of the tie pieces,

as indicated in Fig. 2. With such pockets formed in the wall there can be considerable displacement of the wall either up or down 'with respect to the horizontal buckstay or in adirection parallel with the buckstay without affecting the holding power of the tie pieces.

As shown in the drawings the inner ends ofthe tie pieces come a short distance within the inner face of the wall, but need not be kept far enough from the inner face to prevent overheating of the pieces. heating of the inner ends of the tie pieces, which are ordinarily made of iron or steel, does not decrease their etliciency in holding the walls,- as this converts the inner ends of the pieces to a black oXid of iron which becomes cemented to the bricks. Even though the pieces may be burned to an extent which will make them shorter, the effect of this burning is to 'cause that portion of the end which is partly burned to hold firmly through the tie pieces adhering to the brickwork.

se Over- Angle-irons have been laid in walls and of the expanded metal piece serves to holdthe wall in position.

The tie-pieces are preferably made of a grid or mesh construction of flexible material which can be readily laid between the courses of brickwork. lf the bricks are' and rm hold along the faces of the bricks,

partly through friction and partly through the metal being indented into the surface of the bricks at a number of points.

I have used what is known in the trade as expanded metal. Such material gives a good frictional hold on the brickwork, and may be readily attached to the outer members by passing through slots and bending the ends over.

What l claim and desire to secure by Letters Patent of the United States is A furnace wall comprisino a plurality of horizontal courses `of brickwork7 tie pieces inserted between the contiguous courses, said tie pieces consisting of metallic grids names? or mesh construction of flexible material having a series of separated points or projections arranged to space apart the bricks between which it lies and to engage and friction-ally hold the bricks, and wall-retaining members supported independently -of the .wall and to which the projecting eXible portions of said tie pieces are attached, whereby the wall is permitted to move independently of said retaining members and is prevented from bulging by reason of the holding power of said tie pieces and the sti'ness of vthe retaining member.

lin testimony whereof l havev hereunto signed my name in the presence of two subscribing witnesses.

DAV 1D S. JACUBUS. Witnesses:

EDITH CAMr, E. l?. TERRY., 

